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seq_virmidi.h
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1 #ifndef __SOUND_SEQ_VIRMIDI_H
2 #define __SOUND_SEQ_VIRMIDI_H
3 
4 /*
5  * Virtual Raw MIDI client on Sequencer
6  * Copyright (c) 2000 by Takashi Iwai <[email protected]>,
7  * Jaroslav Kysela <[email protected]>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22  *
23  */
24 
25 #include <sound/rawmidi.h>
26 #include <sound/seq_midi_event.h>
27 
28 /*
29  * device file instance:
30  * This instance is created at each time the midi device file is
31  * opened. Each instance has its own input buffer and MIDI parser
32  * (buffer), and is associated with the device instance.
33  */
34 struct snd_virmidi {
35  struct list_head list;
36  int seq_mode;
37  int client;
38  int port;
39  unsigned int trigger: 1;
44 };
45 
46 #define SNDRV_VIRMIDI_SUBSCRIBE (1<<0)
47 #define SNDRV_VIRMIDI_USE (1<<1)
48 
49 /*
50  * device record:
51  * Each virtual midi device has one device instance. It contains
52  * common information and the linked-list of opened files,
53  */
55  struct snd_card *card; /* associated card */
56  struct snd_rawmidi *rmidi; /* rawmidi device */
57  int seq_mode; /* SNDRV_VIRMIDI_XXX */
58  int device; /* sequencer device */
59  int client; /* created/attached client */
60  int port; /* created/attached port */
61  unsigned int flags; /* SNDRV_VIRMIDI_* */
64 };
65 
66 /* sequencer mode:
67  * ATTACH = input/output events from midi device are routed to the
68  * attached sequencer port. sequencer port is not created
69  * by virmidi itself.
70  * the input to rawmidi must be processed by passing the
71  * incoming events via snd_virmidi_receive()
72  * DISPATCH = input/output events are routed to subscribers.
73  * sequencer port is created in virmidi.
74  */
75 #define SNDRV_VIRMIDI_SEQ_NONE 0
76 #define SNDRV_VIRMIDI_SEQ_ATTACH 1
77 #define SNDRV_VIRMIDI_SEQ_DISPATCH 2
78 
79 int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmidi);
80 
81 #endif /* __SOUND_SEQ_VIRMIDI */